Skip to main content

Pilot and Full-Scale Evaluation of Biological Nutrient Removal Using Anoxic-Anaerobic-Aerobic Process

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

A new BNR process, the Anoxic-Anaerobic-Aerobic process (also referred to as the Reversed A2O process) was evaluated for phosphorus (P) and nitrogen (N) removal at laboratory, pilot, and full scales. Unlike conventional biological nutrient removal processes, the activated sludge in an Anoxic-Anaerobic-Aerobic process is subjected to a sequence of anoxic-anaerobic-aerobic conditions. Nitrate is recycled to the beginning of the anoxic zone along with return activated sludge, eliminating the need for an internal recycle. The results of laboratory, pilot and full-scale studies showed that Anoxic-Anaerobic-Aerobic process is an efficient biological nutrient removal process. The results of this study also suggest that the degree of effective P-release is not the sufficient and necessary condition determining the ability of excess P-uptake in the following aerobic environment. The driving force for excessive phosphorus uptake of phosphorus accumulating organisms is related to the anaerobic retention time and degree. When other factors are fixed, a longer anaerobic retention time and more sufficient anaerobic degree will result in a greater P-uptake potential in the aerobic zone.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: Anoxic-Anaerobic-Aerobic; Biological nutrient removal; EBPR

Document Type: Research Article

Publication date: 2009-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more